From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lucas Levrel Subject: Re: Help/info request (in re trip points) Date: Tue, 26 Jul 2016 23:01:55 +0200 (CEST) Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from smtpfb2-g21.free.fr ([212.27.42.10]:53672 "EHLO smtpfb2-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757486AbcGZVJf (ORCPT ); Tue, 26 Jul 2016 17:09:35 -0400 Received: from smtp6-g21.free.fr (smtp6-g21.free.fr [212.27.42.6]) by smtpfb2-g21.free.fr (Postfix) with ESMTP id AE4D0CDBDBD for ; Tue, 26 Jul 2016 23:02:00 +0200 (CEST) Received: from [192.168.1.10] (unknown [82.233.253.129]) by smtp6-g21.free.fr (Postfix) with ESMTPS id ECD5C7802D6 for ; Tue, 26 Jul 2016 19:22:58 +0200 (CEST) In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hi (once more), Isn't there anyone who could spare a few minutes to guide me on this? I found some references to trip_point_?_hyst files, which seem promisin= g,=20 but they aren't there in my sysfs, and I cannot create them (e.g. "touc= h:=20 cannot touch `trip_point_4_hyst': No such file or directory"). Thanks. Lucas Levrel Le 22 juillet 2016, Lucas Levrel a =E9crit : > Hi, > > Is this the right place to request for help and/or information about = thermal=20 > zones? If not, please point me to the right place. > > I browsed through thermal.c but couldn't find an answer to my questio= n (it=20 > goes without saying I'm not an expert), namely: > how are trip point temperatures set at boot, and how are they reset w= hen=20 > crossed? > > I'm aiming at changing the temperatures at which the fan starts and s= tops.=20 > The kernel parameter thermal.act=3DXXX did change the "fan on" temper= ature, but=20 > not the "fan off" one. I expected the hysteresis T(on)-T(off) to be c= onstant,=20 > and thus I thought T(off) would raise as much as I raised T(on), but = this is=20 > not the case. > > Any help is greatly appreciated. > > Lucas Levrel -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html